@article{MZM_1972_12_4_a14,
     author = {A. V. Mikhalev and M. A. Shatalova},
     title = {Free ordered modules},
     journal = {Matemati\v{c}eskie zametki},
     pages = {477--487},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1972_12_4_a14/}
}